"I view that situation as a baseless and journalistically unethical rehashing of a proven non-event," Carlisle told reporters in Dallas. "You ever heard of the term 'fake news?' This is the most insidious form."

The Willamette Weekreported Tuesday a woman's claim that Cuban put his hand down her pants and touched her inappropriately while they were taking a photo at a Portland nightclub. In an email to the Associated Press, Cuban wrote, "It didn't happen."

NBA spokesman Mike Bass said Wednesday the NBA was looking into the matter.

In a report explaining why they weren't pursuing the case, prosecutors wrote that "there is no evidence to corroborate the complainant's statement and there is evidence contradicting the claim." The report also said the woman didn't want to proceed with the allegation.

The report in the Willamette Weekcame two weeks after a Sports Illustrated account that portrayed a hostile work environment for women in the front office of the Mavericks. The SI report included claims of inappropriate sexual conduct by former CEO Terdema Ussery and detailed domestic violence incidents involving a Mavs reporter, who has since been fired. The report also raised questions about what Cuban knew and when.

Cuban has hired an external group to investigate. Cuban and NBA commissioner Adam Silver will receive the group's findings.